What airlines fly to Sofia?

Turkish Airlines, United Airlines and Lufthansa are the top three most popular airlines that fly to Sofia from Colorado according to our data. Turkish Airlines is the first choice among our users, with 45% of people opting to fly with this airline when traveling to Sofia. Keep in mind that there are 3 different airlines that fly to Sofia on a routine basis, so you have a few additional options to choose from.

How long does it take to fly to Sofia?

Flight times vary depending on what airport in Colorado you fly out of and what airport in Sofia you fly into. For example, flying from Denver to Sofia takes 14h 50m on average. On the other hand, flying from Grand Junction to Sofia takes 19h 35m on average. Keep in mind that it’s always quicker to opt for a non-stop flight, so be sure to check momondo if there are any available for your route.

What is the cheapest airline that flies from Colorado to Sofia?

British Airways is the most popular carrier operating from Colorado to Sofia

When did momondo last update prices for flights from Colorado to Sofia Airport?

Prices for flights from Colorado to Sofia Airport are refreshed on a daily basis.

How many operators does momondo search for flights from Colorado to Sofia Airport?

As of May 2026, there are 3 operators available to choose from for flights from Colorado to Sofia Airport.

How old do you have to be to fly from Colorado to Sofia Airport?

The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Sofia Airport.

What documentation or ID do you need to fly to Sofia Airport?

The required travel and health documents for your Sofia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sofia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

$527 Cheap Flights from Colorado to Sofia in 2026

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Find the cheapest flights from Colorado to Sofia

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One-way

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8:25 pm - 8:15 pm

DEN

SOF

14h 50m

1 stop

9:35 am - 6:25 pm

SOF

DEN

17h 50m

1 stop

$714Turkish Airlines

Tue, Aug 11 - Thu, Oct 15

4:15 pm - 11:15 pm

DEN

SOF

22h 00m

1 stop

6:10 am - 1:45 pm

SOF

DEN

16h 35m

1 stop

$768Lufthansa

Sun, Sep 13 - Wed, Sep 16

8:25 pm - 11:15 pm

DEN

SOF

17h 50m

1 stop

6:10 am - 1:45 pm

SOF

DEN

16h 35m

1 stop

$770United Airlines

Sun, Sep 13 - Wed, Sep 16

1:25 pm - 11:15 pm

DEN

SOF

24h 50m

2 stops

6:30 am - 1:35 pm

SOF

DEN

16h 05m

1 stop

$773United Airlines

Tue, Aug 11 - Thu, Oct 15

10:02 am - 12:10 pm

DEN

SOF

17h 08m

2 stops

6:30 am - 4:58 pm

SOF

DEN

19h 28m

2 stops

$777Air Canada

Tue, Aug 11 - Thu, Oct 15

4:15 pm - 11:15 pm

DEN

SOF

22h 00m

1 stop

6:20 am - 10:11 pm

SOF

DEN

24h 51m

2 stops

$779United Airlines

Sun, Sep 13 - Wed, Sep 16

7:05 am - 2:00 pm

DEN

SOF

21h 55m

2 stops

7:00 am - 5:38 pm

SOF

DEN

19h 38m

2 stops

$780Multiple Airlines

Sun, Sep 13 - Wed, Sep 16

4:15 pm - 6:10 pm

DEN

SOF

16h 55m

2 stops

1:50 pm - 11:34 pm

SOF

DEN

18h 44m

2 stops

$813United Airlines

Sun, Sep 13 - Wed, Sep 16

4:15 pm - 11:15 pm

DEN

SOF

22h 00m

1 stop

6:20 am - 3:40 pm

SOF

DEN

18h 20m

1 stop

$857Lufthansa

Wed, Jul 8 - Wed, Oct 7

4:15 pm - 11:15 pm

DEN

SOF

22h 00m

1 stop

6:10 am - 2:20 pm

SOF

DEN

17h 10m

1 stop

$858Lufthansa

Fri, Sep 25 - Fri, Oct 2

United Airlines flights from Colorado to Sofia

Our best United Airlines deals on Colorado to Sofia flight tickets

United Airlines

Sep 13

DEN8:25 pmDenver Intl

17h 50m

1 stop

SOF11:15 pmSofia

Sep 16

SOF6:10 amSofia

16h 35m

1 stop

DEN1:45 pmDenver Intl

$770

United Airlines

Aug 11

DEN1:25 pmDenver Intl

24h 50m

2 stops

SOF11:15 pmSofia

Oct 15

SOF6:30 amSofia

16h 05m

1 stop

DEN1:35 pmDenver Intl

$773

United Airlines

Sep 13

DEN4:15 pmDenver Intl

22h 00m

1 stop

SOF11:15 pmSofia

Sep 16

SOF6:20 amSofia

24h 51m

2 stops

DEN10:11 pmDenver Intl

$779

Turkish Airlines flights from Colorado to Sofia

Our best Turkish Airlines deals on Colorado to Sofia flight tickets

Turkish Airlines

Aug 11

DEN8:25 pmDenver Intl

14h 50m

1 stop

SOF8:15 pmSofia

Oct 15

SOF9:35 amSofia

17h 50m

1 stop

DEN6:25 pmDenver Intl

$714

Turkish Airlines

Sep 18

DEN8:29 pmDenver Intl

27h 16m

2 stops

SOF8:45 amSofia

Sep 26

SOF9:35 amSofia

17h 50m

1 stop

DEN6:25 pmDenver Intl

$905

Turkish Airlines

Sep 18

DEN6:00 amDenver Intl

29h 15m

2 stops

SOF8:15 pmSofia

Sep 26

SOF9:35 amSofia

17h 50m

1 stop

DEN6:25 pmDenver Intl

$932

Fly from

Fly to

Route

Depart

Return

Price

Cheapest round-trip

Quickest round-trip

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 8/11

8:25 pm-8:15 pm

1 stop14h 50m

Sofia

Thu 10/15

9:35 am-6:25 pm

1 stop17h 50m

$714

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sun 9/13

4:15 pm-11:15 pm

1 stop22h 00m

Sofia

Wed 9/16

6:10 am-1:45 pm

1 stop16h 35m

$768

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sun 9/13

8:25 pm-11:15 pm

1 stop17h 50m

Sofia

Wed 9/16

6:10 am-1:45 pm

1 stop16h 35m

$770

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 8/11

1:25 pm-11:15 pm

2 stops24h 50m

Sofia

Thu 10/15

6:30 am-1:35 pm

1 stop16h 05m

$773

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Tue 8/11

10:02 am-12:10 pm

2 stops17h 08m

Sofia

Thu 10/15

6:30 am-4:58 pm

2 stops19h 28m

$777

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sun 9/13

4:15 pm-11:15 pm

1 stop22h 00m

Sofia

Wed 9/16

6:20 am-10:11 pm

2 stops24h 51m

$779

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sun 9/13

7:05 am-2:00 pm

2 stops21h 55m

Sofia

Wed 9/16

7:00 am-5:38 pm

2 stops19h 38m

$780

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Sun 9/13

4:15 pm-6:10 pm

2 stops16h 55m

Sofia

Wed 9/16

1:50 pm-11:34 pm

2 stops18h 44m

$813

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Wed 7/8

4:15 pm-11:15 pm

1 stop22h 00m

Sofia

Wed 10/7

6:20 am-3:40 pm

1 stop18h 20m

$857

DenverSofia

DEN - SOF

DENSOF

Denver Intl

Fri 9/25

4:15 pm-11:15 pm

1 stop22h 00m

Sofia

Fri 10/2

6:10 am-2:20 pm

1 stop17h 10m

$858

Flights are sorted by cheapest round-trip flights first.

Showing 1-10 of 20 resultsSorted by cheapest first

How to get the cheapest flight ticket from Colorado to Sofia

Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip

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Other information

What is the cheapest month to fly to Sofia?

The cheapest month to fly to Sofia from Colorado is in August. Flight prices, which tend to average around $478, are often lower during this time because this is during the off-season. If you aren’t able to travel during the month of August, then book flights to Sofia from Colorado during November instead. Flights to Sofia in November, while not as cheap as those in August, still average around $567.

How far in advance should I book a flight from Colorado to Sofia?

You are more likely to see cheaper flights to Sofia from Colorado when booking weeks ahead of your departure date. In general, you can expect to find flights to Sofia for around $770 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Sofia from Colorado for as low as $648 on momondo.

Can stopping save me money on Colorado to Sofia flights?

You could potentially save up to 26% on your flight if you consider stops on a Colorado to Sofia flight.

Cheap Colorado to Sofia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Sofia

Fastest flight time	14h 50m
Direct flights	None

The fastest flight from Colorado to Sofia takes 14h 50m

There are no direct flights from Colorado to Sofia. There are no popular flight routes from Colorado to Sofia.

Search flight deals

Frequently asked questions about flying from Colorado to Sofia

When did momondo last update prices for flights from Colorado to Sofia Airport?
Prices for flights from Colorado to Sofia Airport are refreshed on a daily basis.
How many operators does momondo search for flights from Colorado to Sofia Airport?
As of May 2026, there are 3 operators available to choose from for flights from Colorado to Sofia Airport.
How old do you have to be to fly from Colorado to Sofia Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Colorado to Sofia Airport.
What documentation or ID do you need to fly to Sofia Airport?
The required travel and health documents for your Sofia Airport trip may vary depending on your itinerary and personal circumstances. As a general rule, you should carry multiple documents, including a national ID card or driver's license and a passport valid for six months after your intended arrival at Sofia Airport. We recommend that you seek guidance from your airline or a reliable third party such as IATA.

Best airlines flying from Colorado to Sofia

Compare and see reviews for airlines that fly from Colorado to Sofia with momondo

Airline	Rating	Free Cancellation	Price
Turkish Airlines	PriceFrom $568	Free Cancellation	Rating 7.4 4,358 reviews	Search Turkish Airlines flights
Lufthansa	PriceFrom $577	Free Cancellation	Rating 6.8 7,992 reviews	Search Lufthansa flights
United Airlines	PriceFrom $686	Free Cancellation	Rating 7.4 9,700 reviews	Search United Airlines flights

Bansko

Borovets

Velingrad

Sandanski

Why use momondo?

Why should I use momondo to find a flight deal from Colorado to Sofia?

To find the flight that best suits your needs, momondo gathers a range of flights from a large pool of different airlines and agents; you can then use our insights and filters to find and book the right flight to Sofia from Colorado.

Can I find flights from Colorado to Sofia with flexible booking policies on momondo?

Flights from Colorado to Sofia with flexible booking policies can be found by using the search form above and then selecting our dedicated flexible booking filter, which will highlight only the flights where this policy is applied.

How can momondo help me find flights from Colorado to Sofia?

momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Colorado to Sofia.

I’m not ready to book a flight from Colorado to Sofia right now. Can momondo alert me if prices change?

If you are not ready to book a flight from Colorado to Sofia now, use our insights above to find helpful tips or alternatively set up a price alert, where momondo will track prices on flights to Sofia and let you know when they change.

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Cheap flights from Colorado to Sofia from $527

This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Colorado to Sofia departing on 5/24. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.

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How to get the cheapest flight ticket from Colorado to Sofia

What is the cheapest month to fly to Sofia?

How far in advance should I book a flight from Colorado to Sofia?

Can stopping save me money on Colorado to Sofia flights?

What is the cheapest airline that flies from Colorado to Sofia?

What airlines fly to Sofia?

How long does it take to fly to Sofia?

Cheap Colorado to Sofia flight deals and tips

Find info about flight duration, direct flights, and airports for your flight from Colorado to Sofia

Fastest flight time

Direct flights

Frequently asked questions about flying from Colorado to Sofia

Best airlines flying from Colorado to Sofia

Compare and see reviews for airlines that fly from Colorado to Sofia with momondo

Traveling to a place near Sofia?

Why use momondo?

An easier way to manage your Sofia trip

We make it super easy to schedule, organize and travel with friends or family. Trips is free — and available to use no matter where you book.

Get notified when prices go down

Daily price changes in your inbox - only with Price Alerts.

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List of cabin classes available on flights landing in Sofia. Availability may vary depending on flight origin and airline.

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